Air pump



FIG. 1 is a front view of an air pump, showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top perspective view thereof;

FIG. 8 is a front perspective view thereof;

FIG. 9 is a bottom perspective view thereof;

FIG. 10 is a front perspective view, shown with an unclaimed attachment;

FIG. 11 is a front perspective view, shown with an unclaimed attachment;

FIG. 12 is a front perspective view, shown with an unclaimed attachment;

FIG. 13 is a front perspective view, shown with an unclaimed attachment;

FIG. 14 is a front perspective view, shown with an unclaimed attachment; and,

FIG. 15 is a front perspective view, shown with an unclaimed attachment.

The broken lines in the drawings represent unclaimed environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design of an air pump, as shown and described. 